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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#404311#7751. Palindrome PathJellyprxAC ✓2ms3944kbC++141.8kb2024-05-03 19:20:432024-05-03 19:20:44

Judging History

你现在查看的是最新测评结果

  • [2024-05-03 19:20:44]
  • 评测
  • 测评结果:AC
  • 用时:2ms
  • 内存:3944kb
  • [2024-05-03 19:20:43]
  • 提交

answer

#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
const int N=35;
int n,m,tot,can;
int sx,sy,tx,ty;
bool vis[N][N],mp[N][N];
int f[N][N][4],g[N][N][4][2];
int dx[4]={-1,1,0,0},
	dy[4]={0,0,-1,1};
char t[4]={'U','D','L','R'},outp[N*N*N<<4];int cnt;
char s[N];
int stk[N*N],top;
int spc[N*N],len;
int op[N*N*N],k;
void dfs(int x,int y,int dir){
	if(x==tx&&y==ty) len=top,memcpy(spc,stk,sizeof stk);
	vis[x][y]=true,can++;
	for(int d=0;d<4;d++){
		int xx=x+dx[d],yy=y+dy[d];
		if(!mp[xx][yy]||vis[xx][yy]) continue;
		stk[++top]=d,op[++k]=d,dfs(xx,yy,d);
	} 
	if(dir<4) op[++k]=dir^1;
	top--;
}
void walk(int *a,int len){
	for(int i=1;i<=len;i++){
		int to=a[i];
		for(int j=1;j<=g[sx][sy][to][1];j++) printf("%c",outp[++cnt]=t[to^1]);
		for(int j=1;j<=g[sx][sy][to][0];j++) printf("%c",outp[++cnt]=t[to]);
		sx=sx+dx[to],sy=sy+dy[to];
	}
}
void solve(int x,int y,int d){
	if(f[x][y][d]<2) return ;
	if(f[x][y][d^1]>=f[tx][ty][d]){
		g[x][y][d][1]=f[tx][ty][d]-1;
		g[x][y][d][0]=f[tx][ty][d];
	}
	else g[x][y][d][0]=g[x][y][d][1]=f[x][y][d^1]; 
}
int main(){
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;i++){
		scanf("%s",s+1);
		for(int j=1;j<=m;j++)
		  mp[i][j]=s[j]-'0',tot+=mp[i][j];
	}
	for(int i=1;i<=n;i++)
	  for(int j=1;j<=m;j++){
	  	if(!mp[i][j]) continue;
	  	f[i][j][0]=f[i-1][j][0]+1;
		f[i][j][2]=f[i][j-1][2]+1; 
	  }
	for(int i=n;i>=1;i--)
	  for(int j=m;j>=1;j--){
	  	if(!mp[i][j]) continue;
	  	f[i][j][1]=f[i+1][j][1]+1;
	  	f[i][j][3]=f[i][j+1][3]+1; 
	  }
	scanf("%d%d%d%d",&sx,&sy,&tx,&ty);
	dfs(sx,sy,4);
	if(can<tot) return 0*printf("-1");
	for(int i=1;i<=n;i++)
	  for(int j=1;j<=m;j++)
	    if(mp[i][j])
	      for(int d=0;d<4;d++)
	        solve(i,j,d);
	walk(op,k),walk(spc,len);
	while(cnt) printf("%c",outp[cnt--]);
}

这程序好像有点Bug,我给组数据试试?

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 3792kb

input:

2 2
11
11
1 1 2 2

output:

DRDUDRLDUDRRDUDLRDUDRD

result:

ok Valid Solution (Length = 22).

Test #2:

score: 0
Accepted
time: 1ms
memory: 3788kb

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

score: 0
Accepted
time: 0ms
memory: 3784kb

input:

1 1
1
1 1 1 1

output:


result:

ok Valid Solution (Length = 0).

Test #4:

score: 0
Accepted
time: 0ms
memory: 3780kb

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

DDUUDDDUUUDDDUUUURLLUDUDDUDDUDDLRLLRRDUDDUUDDDUUUDDDUUUULLRRRUDUDDUDDUDDDUDDUUDDDUUUDDDUUUURLUDUDDUDDUDDRLLRLLDUDDUUDDDUUUDDDUUUULRUDUDDUDDDDUDDUDURLUUUUDDDUUUDDDUUDDUDLLRLLRDDUDDUDDUDULRUUUUDDDUUUDDDUUDDUDDDUDDUDDUDURRRLLUUUUDDDUUUDDDUUDDUDRRLLRLDDUDDUDDUDULLRUUUUDDDUUUDDDUUDD

result:

ok Valid Solution (Length = 278).

Test #5:

score: 0
Accepted
time: 0ms
memory: 3752kb

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

RRLLDDDDRRRLLLRRRRLLLLDUDDUUDDDUUUDDDDUUUURRRRRLLLLDDRRRRRLLLLDDRRRRDUDDUUDDDUUUDDDDUUUUDDRLRDDRLRRLLDUDDUUDDDUUUDDDDUUUURRRLLDDDDRRRRDDDDLLRRRUUUUDDDDUUUDDDUUDDUDLLRRLRDDRLRDDUUUUDDDDUUUDDDUUDDUDRRRRDDLLLLRRRRRDDLLLLRRRRRUUUUDDDDUUUDDDUUDDUDLLLLRRRRLLLRRRDDDDLLRR

result:

ok Valid Solution (Length = 264).

Test #6:

score: 0
Accepted
time: 0ms
memory: 3828kb

input:

5 3
111
100
111
001
111
4 3 3 2

output:

URLRLLUULRLRRRLRLLDDLRLRRDDRLRLLLRLRRUURLLRUURRLRLLLRLRDDRRLRLDDLLRLRRRLRLUULLRLRU

result:

ok Valid Solution (Length = 82).

Test #7:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

UDLUUUDUUDDRRUDUUDDURUUUUDUUDDUUDDDLULUUDLUUUULDUULULDDDUUDDUUDUUUURUDDUUDURRDDUUDUUULDU

result:

ok Valid Solution (Length = 88).

Test #8:

score: 0
Accepted
time: 0ms
memory: 3684kb

input:

5 3
101
111
100
111
100
4 1 2 2

output:

UUUDLRLRRUDRLRLLDDDULRLRRRLRLLUULRRLUULLRLRRRLRLUDDDLLRLRDURRLRLDUUU

result:

ok Valid Solution (Length = 68).

Test #9:

score: 0
Accepted
time: 0ms
memory: 3804kb

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

DDDUUULDDLDDLDUDDUUDDDUUUDDDLRLLRRLDUDDUULLRRLLRRRDLRLDULDUDDUULLRLLRRDDDDUUULDDLDDLLDDLDDLUUUDDDDRRLLRLLUUDDUDLUDLRLDRRRLLRRLLUUDDUDLRRLLRLDDDUUUDDDUUDDUDLDDLDDLUUUDDD

result:

ok Valid Solution (Length = 168).

Test #10:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

ULRULRUDULUDUUDDUUDDDUUDDDLRUUDLULLRUULUDUUDULUURLLULDUURLDDDUUDDDUUDDUUDULUDURLURLU

result:

ok Valid Solution (Length = 84).

Test #11:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

UURRLLLUDUUDDUUUDDDLRLLRRUUULLRRRUDUUDDUUUDDDLLRRRUUUUDUUDDUUUDDDRLUUURRLLUDUUDDUUUDDDRRLLLRRLLLUUULRUDUUDDUURRLLLUDUUDDUUUDDDLRLLRRUUUUUURRLLRLDDDUUUDDUUDULLLRRUUDDUUDURLUUULLLRRLLLRRDDDUUUDDUUDULLRRUUULRDDDUUUDDUUDUUUURRRLLDDDUUUDDUUDURRRLLUUURRLLRLDDDUUUDDUUDULLLRRUU

result:

ok Valid Solution (Length = 270).

Test #12:

score: 0
Accepted
time: 0ms
memory: 3804kb

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

ULLUDUUDDUUUDDDUUUUDDDDLLUUUULRLUDUUDDLRLUUUDDDUUUUDDDDLRLLRRLLLRRRLLLLRRRRUULLLLLRRRRUUUDDDUUUUDDDDLLUUUULLLRRRLLLLRRRRUDULLUDUUDDUUUDDDUUUUDDDDLLUUUUUUUULLDDDDUUUUDDDUUUDDUUDULLUDURRRRLLLLRRRLLLUUUULLDDDDUUUUDDDUUURRRRLLLLLUURRRRLLLLRRRLLLRRLLRLDDDDUUUUDDDUUULRLDDUUDULRLUUUULLDDDDUUUUDDDUUUDDUUDULLU

result:

ok Valid Solution (Length = 302).

Test #13:

score: 0
Accepted
time: 1ms
memory: 3668kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

LLDDRRRRDDULLLLDUDUURRRRLLLLDDRRRRDDRRRRDDLLLLRRRRUUDUDLLLLUDDRRRRDDLL

result:

ok Valid Solution (Length = 70).

Test #14:

score: 0
Accepted
time: 1ms
memory: 3768kb

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

score: 0
Accepted
time: 1ms
memory: 3820kb

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

LLDUDDUULUDUDDLDUDDUUDDUUUUDUDDUDDLRDUDDUULLRRLLRRRLLRRRDUUDLLUDUDDLLRRRLLRRRLLDUDDUULUDUDDLDUUDLDDUDULUUDDUDLLRRRLLRRRLLDDUDULLDUUDRRRLLRRRLLRRLLUUDDUDRLDDUDDUDUUUUDDUUDDUDLDDUDULUUDDUDLL

result:

ok Valid Solution (Length = 188).

Test #16:

score: 0
Accepted
time: 1ms
memory: 3668kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RRRRLLLLDDRRUURRRLRRLLDDRRRLRRLLRRRLLLRRRRLLLLUURRRRRLLLLDDRRRRRRRRDDLLLLRRRRRUULLLLRRRRLLLRRRLLRRLRRRDDLLRRLRRRUURRDDLLLLRRRR

result:

ok Valid Solution (Length = 126).

Test #17:

score: 0
Accepted
time: 0ms
memory: 3668kb

input:

4 5
01110
10101
11011
10111
1 3 2 3

output:

-1

result:

ok No Solution.

Test #18:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

DDDDRLLDUDDUUDDDUUUDDDDUUUURLLDDDDDUDDUUDDDUUUDDDDUUUULRDDDDLLRRLLLRRRDUDDUUDDDUUUDDDDUUUULLLRRRRDDDDDUDDUUDDDUUUDDDDUUUURLDDDDRLLDUDDUUDDDUUUDDDDUUUUDDDDRLLLLRDDDDUUUUDDDDUUUDDDUUDDUDLLRDDDDLRUUUUDDDDUUUDDDUUDDUDDDDDRRRRLLLUUUUDDDDUUUDDDUUDDUDRRRLLLRRLLDDDDRLUUUUDDDDUUUDDDUUDDUDDDDDLLRUUUUDDDDUUUDD...

result:

ok Valid Solution (Length = 314).

Test #19:

score: 0
Accepted
time: 1ms
memory: 3684kb

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

DUDUUDUUDUURRUDUUDDUUUDDDUUUDDDDLRRRDUDUUDUUDUULRUDUUDDLRUUUDDDUUUDDDDLLDUDUULRDUUDUULLUDUUDDUUUDDDUUUDDDDDUDUUDUUDUURRUDDURRUUDUUDUUDUDDDDDUUUDDDUUUDDUUDULLUUDUUDRLUUDUDLLDDDDUUUDDDUUURLDDUUDURLUUDUUDUUDUDRRRLDDDDUUUDDDUUUDDUUDURRUUDUUDUUDUD

result:

ok Valid Solution (Length = 242).

Test #20:

score: 0
Accepted
time: 0ms
memory: 3812kb

input:

5 5
11111
10000
11111
00001
11111
4 5 5 3

output:

URLRRLLRRLLLRRLLLUULRLLRRLLRRRLLRRRRLRRLLRRLLLRRLLLDDLRLLRRLLRRRLLRRRDDRLRRLLRRLLLRRLLLLRLLRRLLRRRLLRRRUDRLRRLLLLRRLRDURRRLLRRRLLRRLLRLLLLRRLLLRRLLRRLRDDRRRLLRRRLLRRLLRLDDLLLRRLLLRRLLRRLRRRRLLRRRLLRRLLRLUULLLRRLLLRRLLRRLRU

result:

ok Valid Solution (Length = 222).

Test #21:

score: 0
Accepted
time: 0ms
memory: 3660kb

input:

5 5
01010
10101
10101
11001
10011
4 1 5 4

output:

-1

result:

ok No Solution.

Test #22:

score: 0
Accepted
time: 1ms
memory: 3800kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

UUDLRLRRUDDDDRRRLLLURRRLLLLDULRDLRRLRRULRRUUUDRLLRRDDDURLDRRLLUUURRRLLLRRRLLLLDULRLRRDDDLRRULRRUURLLRUURRLURRLDDDRRLRLUDLLLLRRRLLLRRRUUULLRRDLRUDDDRRLLRDUUURRLURRLRRLDRLUDLLLLRRRULLLRRRDDDDURRLRLDUU

result:

ok Valid Solution (Length = 198).

Test #23:

score: 0
Accepted
time: 1ms
memory: 3832kb

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

DLDDDLDUDDUUDDDUUULDDDDUDDUUDDDUUULLRLLRRDDDLLRRLLLRRRDUDLDUDDUUDDDUUULLLRRRRDUDLDDDLDUDDUUDDDUUULDDDDDDLUUUDDDUUDDUDLDDDLDUDRRRRLLLUUUDDDUUDDUDLDUDRRRLLLRRLLDDDRRLLRLLUUUDDDUUDDUDDDDLUUUDDDUUDDUDLDDDLD

result:

ok Valid Solution (Length = 202).

Test #24:

score: 0
Accepted
time: 0ms
memory: 3788kb

input:

5 5
01011
10111
11011
10101
01110
4 1 2 3

output:

-1

result:

ok No Solution.

Test #25:

score: 0
Accepted
time: 1ms
memory: 3692kb

input:

10 8
11111111
11111111
11111111
11111111
11111111
11111111
11111111
11111111
11111111
11111111
7 7 3 6

output:

DDUUUDDUUUDDUUUDDUUUDDUUUDDUUURRLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDRRRLLLDUDDUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURRRRLLLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDRRRRRLLLLLDUDDUUDDUUUDDUUUDDUUUDDUUUDDU...

result:

ok Valid Solution (Length = 2258).

Test #26:

score: 0
Accepted
time: 1ms
memory: 3868kb

input:

10 6
111111
101010
111111
101010
111111
101010
111111
101010
111111
101010
1 6 2 3

output:

LUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDDULLDUUDUUDUUDUUDUUDUUDUUDUULLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDDURLDUUDUURLDUUDUURLDUUDUURLDUUDUURRRLUDUUDDRLUUUDDDUUUUDDDDRLUUUUUDDDDDUUUUUUDDDDDDRLUUUUU...

result:

ok Valid Solution (Length = 950).

Test #27:

score: 0
Accepted
time: 1ms
memory: 3812kb

input:

10 10
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
5 5 5 2

output:

RLLRLLRLLRLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRDDRLRLLRLLRLLRLLRLLRLLRLLRLLDULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRUURLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLL...

result:

ok Valid Solution (Length = 1204).

Test #28:

score: 0
Accepted
time: 1ms
memory: 3848kb

input:

10 10
1010110101
0000011010
1001001001
0011111000
1000111100
1011101001
1100110011
0110001011
0011111000
0101011101
7 5 4 3

output:

-1

result:

ok No Solution.

Test #29:

score: 0
Accepted
time: 0ms
memory: 3688kb

input:

10 6
100100
111111
100001
111111
101111
111111
101010
111111
111100
111111
6 5 7 3

output:

DDDUUUDDDUUUULUDUUDDLDDDUUUUDDDUUUULLDDDUUUUDDDUUUUDDDUUUUUDRRRDUUDRRUDUUDDUUUDDDUUUDDDDDUDDUUDDDUUUDDDUUUULLLLLUUDDUUUDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDRDUDDUURDDDUUUUUUDDDDUUUDDDDUUUDDDDRDUDDUURDUUUUDDDDRLLUDUUDDRRLLLDUDDUULUDUUDDLDUDDUUDDDUUUDDDUUUURLDDDUUUUDDDUUUURRUDUUDDRDUDDUURUDUUD...

result:

ok Valid Solution (Length = 788).

Test #30:

score: 0
Accepted
time: 0ms
memory: 3836kb

input:

10 8
11111110
11110111
01111111
11111101
11011101
11111111
11111011
11011101
11001111
11111110
7 1 2 1

output:

DUUDUUDUULRDUUDUUDUULDDULRLLRRDDDLLLRRRDUUDUUDUULLLRRRRLLLRRRRDDDDDLDUUDUUDUUDDLDDDLRDUUDDDLLLDUDUUDUUDUUDUUDLLRRDDULDDLDDDUDUULRDDLLRRLLLRRRLLLRRRRLLLRRRRDUDUUDLLRRDDULLLRRRDUDUUDUUDUUDUUDUUDUULDUUDDDULLRRDDDDLDDULLLRRRRDDDLLDLDUDUULDUDUUDUULRDLLLRRRRDUDUUDUUDUUDUULLDDDLDUDUUDUULDDDLDDDDUUDUUDUULRD...

result:

ok Valid Solution (Length = 620).

Test #31:

score: 0
Accepted
time: 0ms
memory: 3744kb

input:

10 10
1111011101
1110111110
1111011111
1011101111
0101010111
1110111111
0111010111
1011111011
0111010101
1011111110
2 6 7 4

output:

-1

result:

ok No Solution.

Test #32:

score: 0
Accepted
time: 1ms
memory: 3876kb

input:

8 10
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
8 10 6 10

output:

DUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDUUUUUUDDDDDUUUUUURLUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDRRLLDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDUUUUUUDDDDDUUUUUURRRLLLUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDRRRRLLLLDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDUUUUUUDDDDDUUUUUURRRRRLLLLLUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDRRRRRRLLLLLLDUDDUUDDD...

result:

ok Valid Solution (Length = 1870).

Test #33:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

10 10
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
3 5 9 1

output:

DDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUULLUDUDDUDDUDDUDDUDDUDDUDDUDDDULLDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUULRLUDUDDLRLUDDUDDLRLUDDUDDLRLUDDUDDUDDDULRLLRRLLLRRRLLLLRRRRDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUUDDLLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRDDDDDDUUUUUUDD...

result:

ok Valid Solution (Length = 1932).

Test #34:

score: 0
Accepted
time: 1ms
memory: 3688kb

input:

10 10
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
5 4 7 2

output:

RLLRLLRLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRDDRLRLLRLLRLLRLLRLLRLLRLLRLLDULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRUURLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRR...

result:

ok Valid Solution (Length = 1212).

Test #35:

score: 0
Accepted
time: 1ms
memory: 3732kb

input:

9 10
1111001000
1110010111
0001001000
0101000101
1101000001
0111100110
0010010000
0001001000
1011001101
2 8 5 2

output:

-1

result:

ok No Solution.

Test #36:

score: 0
Accepted
time: 0ms
memory: 3748kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

RRRRRRLLLLLLLDRLDUDDUUDDDUUUDDDUUUUDLRLLRRLLLRRRDUDLLLRRRRLLLRRRRDDDUUUULRDDDRRRRLLLLDDUUDDRLDURRRRRRLLLLLLDDULLLRRRRDLLRRDULLLRRRRLLLRRRRLLLRRRRDDULLLRRRRDUDDUUDDDUUUDRLRRLLDUDLLLRRRRLLLRRRRDDRLRRLLRRRLLLDUDDUUDDDUUURRLLDRRRRRLLLLLRRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRLLLLLLLRRRRRRLLLLLLLDDDLRDULLRRRRRRRR...

result:

ok Valid Solution (Length = 720).

Test #37:

score: 0
Accepted
time: 0ms
memory: 3780kb

input:

7 10
1111111001
1111101110
1111011111
1101011101
1111011111
1111001011
1111111011
7 10 7 2

output:

-1

result:

ok No Solution.

Test #38:

score: 0
Accepted
time: 0ms
memory: 3816kb

input:

9 10
0101011101
1111111111
0101111111
1111111111
1111110101
1011111111
1101111101
1111111011
1101011111
3 7 7 10

output:

DDUUDDDUUULUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDUUDDDRDUDDUUDDDUUURDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUUDRUDUUDDRDDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDUUUUUUUUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDUUDDDLDUUDLRRDUDDUUDDDUUULRDDDDUUUUDDDDDUUUUULDUDDUULUUDDUUDDDLRUUDDDUUDDDUUDDDDULUDUUDDUUDDDLDULDUDDUUDDDUUUDDDDUUUUDDD...

result:

ok Valid Solution (Length = 1516).

Test #39:

score: 0
Accepted
time: 1ms
memory: 3808kb

input:

10 10
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
9 5 3 2

output:

DDUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDRLLDUDDUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDRLLDUDDUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUU...

result:

ok Valid Solution (Length = 3120).

Test #40:

score: 0
Accepted
time: 1ms
memory: 3692kb

input:

10 10
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
2 1 1 3

output:

ULRLLRRUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDURRLLLRRLLLUUUUUULRRRLLLUUUDDDUUUUDDDDLRRRLLLUUUUUDDDDDUUUUUUDDDDDDLRRRLLLUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDULRLLRRLLLRRRLLLLRRRRUUUUUUUURRLLLLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRUDUUDDUUUDDDUUUUD...

result:

ok Valid Solution (Length = 1850).

Test #41:

score: 0
Accepted
time: 0ms
memory: 3816kb

input:

10 10
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
7 4 3 5

output:

RRRRLLLLLRRRRLLLLLRRRRLLLLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRUURLRRLLRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRRLRRLLRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLL...

result:

ok Valid Solution (Length = 1694).

Test #42:

score: 0
Accepted
time: 1ms
memory: 3716kb

input:

10 10
1110000101
1100110001
1011011001
0000000111
0010010111
0100111011
1110010011
1100111111
0110001110
0100000101
9 9 6 10

output:

-1

result:

ok No Solution.

Test #43:

score: 0
Accepted
time: 1ms
memory: 3828kb

input:

10 10
1110111011
1111111111
1110110000
1111111111
1010011100
1111111111
1111001110
1111111111
1001010011
1111111111
6 9 2 9

output:

DDDDRRLLRRRLLLRRRRLLLLDUDUURRRRRLLLLLRRRRRRLLLLLLDUUDUURRRRRRRLLLLLLLDUUDUUDUUDUUDUURLDDDRRRRRRRRLLLLLLLLLDUUDUUDUUDDDDDDDDDLRLRRLRRDUDLRRRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLDUDUULRDUDUUDLRRDDURRLLDRRRRRRRRLLLLLLLLLDUUDUUDUUDUULRDUDUUDUULRRDLRRLRRDUULRDDDDDRRRRRLLLLLLRRLRRDUUD...

result:

ok Valid Solution (Length = 1264).

Test #44:

score: 0
Accepted
time: 1ms
memory: 3820kb

input:

10 10
1111110011
1011111110
0111011111
1101101101
1111111110
1110111101
1011011111
1111111101
1011111101
1111111011
7 3 5 5

output:

DUUDUURRRRLLLLLDUUDUULRDUDUURRRRLLLLRRRRLLLLLUDDULRLLRRLLLRRRUDUDDUDDUDDLLLLRRRRDUUUDUDDLRDUULLLLRRRRRDUUDUUDUURRRLLLDUURLUDDULLLLRRRRRUDUDDDULLLLRRRRLLLLRRRRRUDUDDUDDUDDUDDUDDUDDRLDUUDUUDUUUDDRRRRLLLLUDDUDDUDDRRLLDUDUURRRRLLLLDUUUDUDDUDDRRRRLLLLDUDUURRRRLLLLLRRRRLLLLLDUUDUUDUUDUUUDUDDLRRRLLUDDUDDUD...

result:

ok Valid Solution (Length = 1292).

Test #45:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

10 10
1101011101
1110111011
0101110101
1111101011
1111111111
1010111010
0111111101
1111101011
0111111101
1011101111
3 8 2 2

output:

-1

result:

ok No Solution.

Test #46:

score: 0
Accepted
time: 1ms
memory: 3860kb

input:

20 12
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
16 8 13 12

output:

DDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUU...

result:

ok Valid Solution (Length = 17024).

Test #47:

score: 0
Accepted
time: 1ms
memory: 3832kb

input:

20 17
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
111111...

output:

LDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUULLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDD...

result:

ok Valid Solution (Length = 11002).

Test #48:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

20 19
1111111111111111111
1000000000000000000
1111111111111111111
0000000000000000001
1111111111111111111
1000000000000000000
1111111111111111111
0000000000000000001
1111111111111111111
1000000000000000000
1111111111111111111
0000000000000000001
1111111111111111111
1000000000000000000
11111111111111...

output:

UURLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLUULRL...

result:

ok Valid Solution (Length = 11178).

Test #49:

score: 0
Accepted
time: 1ms
memory: 3752kb

input:

20 16
0101001111110001
0000111101001011
0000111100011001
1101110100110100
1011011110001101
1101000110111111
0111010111100101
1101101111011001
1101010100000101
1111001000110010
0001011000101000
0101111010110110
0001101111000111
1010100010000110
0100100011011100
0100100101011111
0001000001001110
10011...

output:

-1

result:

ok No Solution.

Test #50:

score: 0
Accepted
time: 1ms
memory: 3792kb

input:

20 18
100101011111011110
111111111111111111
101111101010000001
111111111111111111
110010011011001010
111111111111111111
110110111110000010
111111111111111111
100001000001111000
111111111111111111
100010100111111000
111111111111111111
111100011010110111
111111111111111111
111101010111011110
111111111...

output:

URRLLDDDDDDRRRLLLUUUURRRRLLLLUUUUUURRRRRLLLLLDDDDDDRRRRRRLLLLLLDDRRRRRRRLLLLLLLUUUUUURRRRRRRRLLLLLLLLDDRRRRRRRRRLLLLLLLLLDDRRRRRRRRRRLLLLLLLLLLUURRRRRRRRRRRLLLLLLLLLLLUURRRRRRRRRRRRLLLLLLLLLLLLUURRRRRRRRRRRRRLLLLLLLLLLLLLUUUUUURRRRRRRRRRRRRLLLLLLLLLLLLLLUDDDRRRRRRRRRRRRRLLLLLLLLLLLLLLUURRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 6094).

Test #51:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

20 16
1110111111111111
1111111001111111
1111110111111011
1111110011111111
1111111111011111
1111110111101111
1111011111111111
1101111111111111
1011111111111001
0111111011111111
1110111111111111
1111111111111111
1111011011111111
0101110111111111
1110111101111110
1111111111111111
1111111111011111
11111...

output:

RRRRLLLLLRRRRLLLLLUDRLDDDDDDDDDUUUUUUUUUURRRRLLLLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDRRLLDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUURRRRLLLLDDDDDDUUUUUURLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDRLDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUUDUUDDUUUDDDUU...

result:

ok Valid Solution (Length = 11616).

Test #52:

score: 0
Accepted
time: 1ms
memory: 3828kb

input:

20 18
110111110101110101
101010111110101010
110101111101111101
111011111011101111
010111110111111101
111011111011111011
011111110111010111
101110101010111010
010111110101110111
101010101011101110
011101110111011111
101010111011111010
010101111111110101
101011101110111011
110101011101010101
101010101...

output:

-1

result:

ok No Solution.

Test #53:

score: 0
Accepted
time: 1ms
memory: 3760kb

input:

14 20
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
...

output:

DUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUURRRRRRRRRRRRLLLLLLLLLLLLLDDDDDDDDDDDDDDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDD...

result:

ok Valid Solution (Length = 11532).

Test #54:

score: 0
Accepted
time: 1ms
memory: 3824kb

input:

19 20
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
...

output:

UDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDRRDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDU...

result:

ok Valid Solution (Length = 14738).

Test #55:

score: 0
Accepted
time: 1ms
memory: 3872kb

input:

10 20
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
5 6 8 20

output:

LLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDUDDLLLLLLLLLLLLLLLLLLLUDDURRRRRRRRRRRRRRRRRRRDUDUULLLLLLLLLLLLLLLLLLLDUDUURRRRRRRRRRRRRRRRRRRDUDUULLLLLLLLLLLLLLLLLLLDUDUURRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDUDDLLLLLLLLLLLLLLLLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDDURRRRRRRRRRRRRRRRRRRDDUDULLLLLLLLL...

result:

ok Valid Solution (Length = 530).

Test #56:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

18 20
11011110100011011100
01100010001011110000
11100110001011101110
10110111100011001111
10100011111011110011
00001010110000010010
01101101100110010001
10001000111110000100
11000011001000001001
10101011101010100110
01111011011010100001
00010110000101101011
10110101011011000011
00110010111011000100
...

output:

-1

result:

ok No Solution.

Test #57:

score: 0
Accepted
time: 0ms
memory: 3816kb

input:

20 20
10101101000110011011
11111111111111111111
10110101010011101111
11111111111111111111
11010000010101011110
11111111111111111111
10100110101011011011
11111111111111111111
10010101101010101001
11111111111111111111
11101001101101101010
11111111111111111111
11100110110111110111
11111111111111111111
...

output:

DDDUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUULLUDUUDDLDDDUUUDDDUUUULLDUDDUUDDDUUUDDDUUUULDDDUUUUDUUDDUUUDDDLUDUUDDLDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUUDLRLUUDDUUUDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDD...

result:

ok Valid Solution (Length = 8604).

Test #58:

score: 0
Accepted
time: 0ms
memory: 3700kb

input:

18 20
11111111111110111111
01111111111011111111
01111111111110011111
11111111111101111111
11111011111110111111
11111111111110111110
11111111111111011111
11011111111111111110
11110111111111001111
10111111110110111111
11111011111111111111
11111111111011101111
11101111001111111111
11111111111111111111
...

output:

DDDUUUDDDDUUUURRRRRRRRLLLLLLLLLDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUURRRRRRLLLLLLDDDDDDDDDDDDDDDDDRRRRRRRRLLLLLLLLLDUDDUUDDDUUUDDDDUUUUDDDDUUUUUDDDDUUUUURRRRRRLLLLLLDDDDUUUUDDDDUUUUURRRRRRLLLLLLDDDUUUDDDDUUUUDDDDUUUUUDDDD...

result:

ok Valid Solution (Length = 7380).

Test #59:

score: 0
Accepted
time: 0ms
memory: 3800kb

input:

13 20
11011101111111110111
11111110111010111111
11111111111101011101
10111010101111111010
01011101111111010111
10101011101110101110
01111101010101011111
11111011111110101011
11110111111111011111
11111010101011101011
01111111110101011111
10111010101011111110
11111111110111011101
12 16 1 20

output:

-1

result:

ok No Solution.

Test #60:

score: 0
Accepted
time: 1ms
memory: 3876kb

input:

20 20
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
...

output:

DDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUURRRRRRRLLLLLLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUU...

result:

ok Valid Solution (Length = 23104).

Test #61:

score: 0
Accepted
time: 1ms
memory: 3860kb

input:

20 20
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
...

output:

RRRRRLLLLLDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURRRRRRLLLLLLRRRRRRRLLLLLLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDD...

result:

ok Valid Solution (Length = 15910).

Test #62:

score: 0
Accepted
time: 1ms
memory: 3692kb

input:

20 20
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
...

output:

RLLRLLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 8830).

Test #63:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

20 20
11110100001010101100
10110001101110101000
01011110111010110000
10111001001011011100
00110111011000010101
01001111110001010010
00101001010111010111
10110100100010001000
10101010001110000010
01111111010110101011
00100101001111000101
00110001001001111000
10101110010001000010
00000100010000110000
...

output:

-1

result:

ok No Solution.

Test #64:

score: 0
Accepted
time: 1ms
memory: 3900kb

input:

20 20
11010001010100101010
11111111111111111111
11000010111011001011
11111111111111111111
10010100111100111110
11111111111111111111
11101100001110000111
11111111111111111111
11010100111101000011
11111111111111111111
11010011111100110100
11111111111111111111
10001011110000111010
11111111111111111111
...

output:

RRRLLLDDDDUUUUUDDDDDRRRRLLLLDUDDUURRRRRLLLLLDDRRRRRLLLLLLRRRRRLLLLLLDDRRRRRLLLLLLDDDDUUUUUDDDDUUUUUDDDDUUUUUDDDDUUUUURRRRRLLLLLLDDDDUUUUUDDDDUUUUURRRRRLLLLLLDDDDUUUUUDDDDDRRRRRLLLLLLDUDDUUDDDUUUDDDDUUUURRRRRLLLLLLDUDRRRRRLLLLLLDDRRRRRLLLLLLDDDDDDRRRRRLLLLLLRRRRRLLLLLLDDDUUUDDDDUUUURRRRRLLLLLLDUDDUUR...

result:

ok Valid Solution (Length = 10336).

Test #65:

score: 0
Accepted
time: 1ms
memory: 3860kb

input:

20 20
11111111111101111111
11111111111111111101
11111110111110111111
11111011110111111111
11010010110111111011
11111111111111101111
11111111111111111111
11111111111111111001
11111111011110111111
11111111111111111101
11101011111111111111
11111110111111101111
11111111111111111101
10111111111111100111
...

output:

DDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUULUDUUDDUUUDDDLDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUULUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDD...

result:

ok Valid Solution (Length = 13780).

Test #66:

score: 0
Accepted
time: 0ms
memory: 3800kb

input:

20 20
11010111110101010101
10111010101111101010
11111101111101110111
10101011111010101110
11111111110101111101
10111111111010101111
11110101010111111101
10111110101011101111
01110111011101111101
10111011101010111010
11010111011111010111
11111011101011101111
01010111011111011111
11111010111110111011
...

output:

-1

result:

ok No Solution.

Test #67:

score: 0
Accepted
time: 2ms
memory: 3880kb

input:

30 25
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
11111111...

output:

DDDDDDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUUUUU...

result:

ok Valid Solution (Length = 70620).

Test #68:

score: 0
Accepted
time: 2ms
memory: 3944kb

input:

30 25
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
10101010...

output:

DDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUD...

result:

ok Valid Solution (Length = 41362).

Test #69:

score: 0
Accepted
time: 0ms
memory: 3744kb

input:

30 25
1111111111111111111111111
1000000000000000000000000
1111111111111111111111111
0000000000000000000000001
1111111111111111111111111
1000000000000000000000000
1111111111111111111111111
0000000000000000000000001
1111111111111111111111111
1000000000000000000000000
1111111111111111111111111
00000000...

output:

UULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRUURLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLR...

result:

ok Valid Solution (Length = 31622).

Test #70:

score: 0
Accepted
time: 0ms
memory: 3832kb

input:

30 30
011110110001111010011111110010
011101110110100110001101010100
100100100111010000000011100101
111110001011110110101000100000
100110011100000111100111100010
110011101000111000101110011101
011000001101110100001010011100
001101101010010100111111110011
100010111001110111010110100001
000101010010110...

output:

-1

result:

ok No Solution.

Test #71:

score: 0
Accepted
time: 1ms
memory: 3904kb

input:

30 30
101011111010110011011100010111
111111111111111111111111111111
101000010010011000101010010010
111111111111111111111111111111
101010011110010001011010010101
111111111111111111111111111111
111100010110101001000001000001
111111111111111111111111111111
111101000101101001001000100001
111111111111111...

output:

DDDDDDUUUUUULDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUULLLDDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 32100).

Test #72:

score: 0
Accepted
time: 1ms
memory: 3888kb

input:

30 30
111111111111111101111111011011
111111100111011111111111101010
111111111111111111111111011111
111111111101111111110111111110
111111111111111011111111111111
111110111111111111111111011111
111111111111111111111111111011
111101111111011111111111111111
111111111111111111111111111111
101110111110111...

output:

DDUUDDDUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUUDDDUUUULDDDUUULUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDD...

result:

ok Valid Solution (Length = 30628).

Test #73:

score: 0
Accepted
time: 1ms
memory: 3740kb

input:

30 30
110111011111110111011111110101
101110101010111010101011101010
011101111101011101011111010111
111110101110111111111011101110
010101110101011101010101111111
101111101011111111111110101011
111101110111010101011101010101
111011111010101010101010101111
011111011111110101011111111101
111010101111101...

output:

-1

result:

ok No Solution.

Test #74:

score: 0
Accepted
time: 2ms
memory: 3912kb

input:

21 30
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111...

output:

DDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUURRLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUU...

result:

ok Valid Solution (Length = 54792).

Test #75:

score: 0
Accepted
time: 1ms
memory: 3816kb

input:

21 30
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101...

output:

RRRRRLLLLLLUUUUUUUUUUUUUURRRRRLLLLLLRRRRRLLLLLLDDDDDDDDDDDDDDDDDDDDLRLLRRUUUUUDRRRRRLLLLLLLLRRLLLRRRLLLLRRRRUUUUUUUUUUUUUUUURRRRRLLLLLLLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRDDDDDDDDDDDDDDDDDDDDRRRRRLLLLLLRRRRRLLLLLLUUUDRRRRRLLLLLLLLLLRRRRLLLLLRRRRRRRRRRLLLLLLDDRRRRRLLLLLLLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLL...

result:

ok Valid Solution (Length = 15894).

Test #76:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

21 30
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000...

output:

RLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 24386).

Test #77:

score: 0
Accepted
time: 0ms
memory: 3672kb

input:

25 30
011010010110010101001110110111
000011111001111101110011010001
011011100010011000110100110000
001111001100100010111111101001
000101111100111001000000001111
001010110011101110101000010000
001010011001010000011001001001
011111010111110110101001110000
011001010011100010100101011000
100011000011110...

output:

-1

result:

ok No Solution.

Test #78:

score: 0
Accepted
time: 0ms
memory: 3748kb

input:

25 30
101100000100000111111100110011
111111111111111111111111111111
100111110101001111010001110011
111111111111111111111111111111
101101100110111111011110101110
111111111111111111111111111111
111001000110101100010101000110
111111111111111111111111111111
100000001011110010001101011010
111111111111111...

output:

UUUUULRUDUUDDUUUDDDUUULUDLLLULUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDLUULUUUUUULUDUUDDLUUUUULUDLULUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDLUUUUUUDLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDLUDUUDDUUUDDDUUUUDDDDLUUUUUUUULUULLUUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDD...

result:

ok Valid Solution (Length = 7646).

Test #79:

score: 0
Accepted
time: 1ms
memory: 3808kb

input:

25 30
111111101111111111111111111111
111111111111111101111111110111
111111111111101111111111111111
111111111111111101101111111111
011101111111111111111111101111
111011100111111110111110111111
111111110111111111111111111111
111111111111110111111111111111
111111111111111101111111111111
111111111111111...

output:

UUUUURRRRLLLLLUDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDRRRRLLLLLUUUUUUUUUUUUUUUDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDLRUUULLRRUULLLRRRUUUUUUUUUUUUURRRRLLLLLUDDUDDUDDUDDUDDUDDUDDUDDUUUUUUUULLLRRRLLLLRRRRULRUUUUURRLLUDUDDUDDRRRRLLLLLUUUUDUDDUDDUDDULLLLRRRRUUULLLLLRRRRRL...

result:

ok Valid Solution (Length = 9942).

Test #80:

score: 0
Accepted
time: 0ms
memory: 3776kb

input:

25 30
110101110101011111010101010111
101111101011111011111110101010
110111011101110111111101011101
101011111011101011111111111011
110111111101011111110111111111
111111111110101011111111101010
110101010101010101011111011101
101010111010101111111111101111
111101110111011101011111010111
101010101010111...

output:

-1

result:

ok No Solution.

Test #81:

score: 0
Accepted
time: 0ms
memory: 3940kb

input:

30 30
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111...

output:

DDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUUDDDDDUUUUUURRRLLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUU...

result:

ok Valid Solution (Length = 80574).

Test #82:

score: 0
Accepted
time: 2ms
memory: 3848kb

input:

30 30
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101...

output:

DDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUURRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUU...

result:

ok Valid Solution (Length = 64164).

Test #83:

score: 0
Accepted
time: 2ms
memory: 3748kb

input:

30 30
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000...

output:

DDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLL...

result:

ok Valid Solution (Length = 28888).

Test #84:

score: 0
Accepted
time: 1ms
memory: 3824kb

input:

30 30
010110110101101010000010000110
101110000111000001001111100101
010100011111100110100001111101
101101100010111011011010001010
100101010100001011101100101100
101001111001111101101100001110
000111101010011110100001110100
111111001101000001011110000111
010000100010000100000011101000
100001010111010...

output:

-1

result:

ok No Solution.

Test #85:

score: 0
Accepted
time: 1ms
memory: 3896kb

input:

30 30
100110101011111011001000111100
111111111111111111111111111111
101001000111011110000110011110
111111111111111111111111111111
111001111110100011111000000010
111111111111111111111111111111
100111001001100000100010001101
111111111111111111111111111111
110001101000111011111010110110
111111111111111...

output:

RRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLDUDDUURRRRRRRRRRRRRRLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLDU...

result:

ok Valid Solution (Length = 23724).

Test #86:

score: 0
Accepted
time: 2ms
memory: 3804kb

input:

30 30
111101111111111111111011111111
100111111111111111111111011111
111111011111111111011111111110
101111111101111111111111111111
111111111111111111111111111111
111111101111011111111110111111
111011111111111111111111111111
111111111111111111111101111111
111111111111111111111111111111
011111100111111...

output:

UDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDRRLLLDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUULRDDUUDDDUUUDDDDUUUUDDDDDUUUUURRLLLDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDUU...

result:

ok Valid Solution (Length = 50332).

Test #87:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

30 30
011111010101111111011101111101
111011101011111110111111101011
111111010101011101111101110101
111110101011101110111111101110
010111011101110101110101111101
101111101011101110101010111111
110101010101010111011101010101
101110101111101110101110111111
110111011101010111010111110101
101011111110111...

output:

-1

result:

ok No Solution.

Test #88:

score: 0
Accepted
time: 2ms
memory: 3904kb

input:

30 30
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111...

output:

UDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDD...

result:

ok Valid Solution (Length = 59102).

Extra Test:

score: 0
Extra Test Passed